July 2005 - national digit lengths

The following table indicates valid lengths of area codes and subscriber
numbers for Uruguay. The "x" characters indicate the minimum mandatory
digits, while "." characters are optionally present in the number up to
the maximum number of digits shown. Number lengths may vary depending on
place and usage.

2004? - new numbering plan proposed

There is no known schedule for implementing the new plan, but the following
features are noted:

Geographic/fixed numbers involve a consistent 1-digit area code and
7-digit subscriber number format.

+598 2 xxxxxxx will be assigned for Montevideo metropolitan area. As
Montevideo area code is already +598 2 followed by 7-digit subscriber
numbers, these numbers are not expected to change for the new plan.

+598 4 xxxxxxx will be assigned for other areas of Uruguay. If the area
code and subscriber number portion totals 7 digits, the new subscriber
number will be created by the combined area code and subscriber number,
and the new area code '4' will take effect.

Some areas such as Maldonado may already have an 8-digit total of area
code and subscriber number. The number would be partitioned into area
code '4' followed by the remaining 7 digits as subscriber number
e.g. +598 42 xxxxxx would become +598 4 2xxxxxx.

Short codes would generally be of form 1xx. 911 will be a national
emergency short code, although there would remain individual emergency
service short codes in 10x format.

26 October 1997 - Uruguay numbering expansion

As of 26 October 1997, an expansion of Uruguay's numbering plan, including
an additional digit for Montevideo, took effect. A permissive dialling
period until April 1998 allows use of either old or new numbers.

6-digit Montevideo subscriber numbers were migrated to 7-digit numbers:
+598 2 xxxxxx to +598 2 xxxxxxx. The conversion pattern was not
straightforward, but at least the final three digits appear to
have been retained.